peters



` To allfwhom tmayjfcmtcern; V e Be` itknown thateI, RoBERr B. GonsUoI-i, l y `of thelcity, county, and State of New York,

haveinvented a* new 4and useful Improve" mentfin* Direct* Double#Actingl Steamy `Pumpsgand ludo hereby declare thatthe` e following isa" full, clear, and exact descrip- `tion of the same,freference `being had to thel annexed drawings`,making a part of this specification, in which.;`

e e TES 1PA; NTFF 10E DiREoTAcTINs HYDRAULIC STEAM-PUMP.

specisaonbf Letters Patent Nd. 12,625,` dated April 3, 1855.` 1

= Figure 1', is al verticaljsection of my iml provedfpunnp` the` plane oi"` section being through the water and"steam valves and pas- Y sages:` `Fig..2, is an external view of` ditto "in elevation, aportion of" the outer `c`asing of the pumpbeing" removed. Fig. 3, is

`horizontal section ofllditto, (we)` (m) Fig. 1, being the" line of section. i Fig. 4, is a, de-v tachedVvertical sectionVo "the `pump chamber.` lfFigs. 5 andh,"`are"'d`etachedviews of tha` packing ring." Figs. "7 and `8,k`are de-` tached views ofthe plunger. j

Similar rlettersoff reference Vindicate corresponding part-s" infthe several figures. *y e This" inventionfrelates to anew anduseful improvement directfdoubleJacting steam `pumps and consists` in admitting water, un`

der pressure,"intolthe suction ends of the l pump `cylinder. as will be hereaftershown,

l y `whereby the steani` is assisted ,in` throwing l the steam valve, an easy f-'motion given the e force" and suction valves,andtheblow `or concussion attending the `working `of the plunger in ordinary `pumps `at the comymenoement of each `stroke avoided.

`To enableothers skilled in the art to fully understand and construct my invention, I

will proceed to describeit.

A, Figs. 1 and 2, represents a stearncylinder, and B, Fig. 1`,\is a piston which works therein; C is thepiston rod and D is i "the steam valvel of the cylinder A. `The `above parts arein commonuse and require no particular description.

1Q E, Figs,V 1 and 2, is] the outer casing of `the pump, having astuiiing box F at; its upper end through which" the piston rod C works, Gr is the pump-cylinder within the casin'gyE and having `corrugated or `crimped plates H connectedtofits upperand lower ends. `These plates H are also connected to the upper and lower ends of the casing` E `leaving a chamber orispace I between. the

casing and cylinderatone side with which a suction pipe J communicates and `a. chamy .ber `or space I at theopposite side with which aneduction or force pipe L communicates see Fig. 1. On the corrugatedplates H there arevalves (a.) (a) the valves (a) at onefside of the pump cylinder Gr opening inward,`and the valves (a) at the opposite side openingoutward. y y e `isa plunger attaohedfto the lower end ofthe piston rod C, and D is a packing ring placed" within the pump cylinder G, the plunger working snugly within the ring, see Fig. `1. The nackingringD has apertures (t) through it, four are shown in Fig. `3, two are seen in Fig. 1 at opposite sides of the plunger, and only one is seen in Fig. 6.

fNwis a circular opening in the pump cylinder Gj with which a pipe O is connected, see 2, 3 A1and 4. This pipe O is pro-n vided 4with al valve l?` as vshownin FigQ, and said Vpipe may; communicate with the,'5 main or `any reservoir having'a suiiici'etm i head of water to` give the water in the pipe O aVrequisite amount of pressure. e

Q'isthefrodiof the steamivalve D having stops`=.(c`)` upon it :and R is an armati 80 tached tothe piston rod the outerend of the arn1` working on thevalvezrod and between the stops (0)*(p') seeFigs.` 1 and 2.

fOperation: TheplungerM is` moved up and,` downby the actionof the steam upon g5 thefpiston B :inthe cylinderA in the usual manner." `"When the plungerM is forced e `aowmartini the' pump Cylinder G the water underneath the plunger, which was drawn up during the upward movement of the plunger, isi forced through the valves (a) into the space I and out of the force or eduction pipe L`the suction valves (a) on the opposite side. of course being closed by the pressure of the water against them, meanwhile as the plunger descends, the valves (a) above t-he plunger are opened by the suction or vacuum formed by the descent of the plunger' the water from the pipe J rushing into the cylinder above the plunger and the opposite valves (a)` are closed, see arrows, Fig.` l. When the plunger moves upward in the pump cylinder,the position of the valves (a) (aa) are reversed, the valves (a) above the plunger being closed by the pressure of the water, and the valves (a) opened and the water forced out through the pipe L. This action will be readily understood as it is common to all double acting pumps. In the ordinary pumps there is inevitably a vacuous space in e the suctionlend ofthe chamber at the completion of each stroke, more or less, according to the speed of the pump and height of suction, which vacuous space is passed through by the returningl plunger at a greatly accelerated speed, checked instantaneously by the water, thereby badly straining the machine. Pumps driven by a crank motion and regulated by a balance wheel are not so much affected by this diiiiculty as direct acting pumps, where a constant fluid resistance is depended upon for a regular motion.

The above difficulty is remedied by my improvement as follows: When the plunger has nearly reached the end of a stroke, see Fig. l, in which the plunger is nearly down, the upper end of the plunger will pass the holes or openings (o) in the ring pacldng D and the water under pressure in the pipe O will rush through the openings (b) over the plunger and into the suction end of the pump cylinder, and will not only prevent or destroy the vacuum but will also act suddenly upon the forcing end of the plunger with a power equal to, or approaching that upon the forcing end of the plunger; this water pressure acting conjointly with the steam at the moment the engine is taxed to move the steam valves in addition to its regular load enables it, by means of the arm R on the piston rod C to throw the steam valve D with unerring precision across the openings, and at the same time, the water from the forcing end of the pump-chamber having been driven through the forces valves (a), the motion of the plunger has not been accelerated to such a degree but that the reversing takes place quietly. The returning plunger immediately closes the openings (b) in the ring packing D, and cuts off the communication with the pipe O until it reaches the point in the upward stroke corresponding with the one represented in Fig. l.

The charging of the pump chamber as specified above, does not decrease the effective result of the engine, as, the water ejected merely fills the space which must otherwise necessarily remain unoccupied when the plunger reverses. The water pressure therefore, subserves a treble purpose, that of assisting the steam in throwing the steam valve, of easing the action of the force and suction valves (a) and also of lling the otherwise vacuous space in the pump chamber and preventing entirely the blow or concussion above alluded to.

My improvement as herein specified admits of a perfect adjustment of the water pressure to the speed of the pump by means of the valve P in pipe O, as shown in Fi 2.

Having thus described my invention,w at I claim as new and desire to secure by Letters Patent, is-

Eifecting a water pressure upon the suction end of the pump plunger M in directacting steam pumps, at, or near the completion of the stroke, without diminishing the resistance against the forcing end of the plunger, in the manner as herein shown or in an equivalent way, for the purpose of closing the suction valves (a) filling the vacuous space in the pump chamber, preparing the force valves for opening, and acting conjointly with the steam pressure upon the piston B whereby the steam valve D is operated with precision whatever may be its velocity.

R. B. GORSUCH.

Witnesses:

S. H. WALES, J. G. MASON. 

